Industrial oil burner



Filed Dec. 8, 1930 2 Sheets-Sheet l F6 gwuwvboq l 3' JoH v H41. TEEN/ZN;

J. HALTERMAN 1,881,526

INDUSTRIAL OIL BURNER Oct. 1l, 1932.

Filed Dec. 8, 1930 2 Sheets-Sheet 2 Jo HN Hm. TEEN/7N;

Patented Oct. 11, 1932 UNITED STATES JOHN HALTERMAN, OF IORTLAND, INDIANA INDUSTRIAL OIL BURNER Application filed December 8, 1930. Serial No. 500,758.

The object of this invention, broadly speaking, is the provision of a fuel burner especially adapted for the atomization of oil or other volatile fuels, combining it with air whereby perfect combustion will eventuate when the product is fired, and by reason of which there will be no waste, and a maximum of heat units will be obtained from the fuel employed.

More specifically stated, my object is the provision of a fuel burner particularly intended for large furnaces, such as those of industrial plants, where it is required that a large space be heated, and that the heat produced shall be of super-intensity.

Also my object is the provision of an oil burner which is simple in construction, comparatively light in weight, easily and quickly installed, easily controlled and regulated, economical in the consumption of fuel, and which can be manufactured and sold at a comparatively low price.

And, finally, my object is to provide an oil burner for furnaces wherein the construction is such that its parts are easily accessible that they may be quickly and easily cleaned, if required, and which will cause the furnace which it serves to be uniformly heated throughout its surface to be heated.

Other objects and particular advantages of my invention will suggest themselves, especially to the mechanician, in the course of the following description, and that which is new will ice-correlated in the appended claims.

The preferred means for carrying out the principles and objects of my invention in a scientific, practical, and effectual manner, is shown in the accompanying two sheets of drawings, in which Figure 1 is a front elevation of my construction, looking rearward, as taken from the face of a furnace.

Figure 2 is a side elevation of the same, showing a portion of a furnace with which my device is related.

Figure 3 is a longitudinal central section as taken through my burner.

Figure 4 is a rear elevation of my burner, as looking into the burner from the rear, that is toward the furnace.

Figure 5 is a sidev elevation of the oil induction tube and its nozzle, showing also the baffle plate attached thereto.

Figure 6 shows a bottom plan view of the same parts as that shown in Fig. 5,1511% is taken at right-angles thereto.

And Figure 7- is a cross section, as taken on the line 77 of Figure 6.

Similar indices denote like parts throughout the several views.

In order that the construction, the operation, and the several advantages of my invention maybe more fully understood and ap-- preciated, I will now take up a detailed description thereof, inwhich I will set forth the same as fully and as comprehensively as I may.

My construction comprises an outer domeshaped case 1, having its rear end fully open,

with its forward portion 1' formed dome shaped, with a discharge aperture 1 formed through the center of the dome portion, the diameter of said aperture being approximate 1y one-half the diameter of the interior of the case 1. The periphery of the rear end of the case 1 is provided with threads 1" for the purposes herein set forth.

Numeral 2 designates the inner domeshaped case, the same being substantially identical with the case 1, with the exception that it is smaller in size, both in diameter and in length, and its forward portion 2 is formed dome-shaped, with a discharge aperture 2" formed through the center of said dome portion, with the diameter of the aperture 2 approximately one-half the diameter of the interior diameter of the case 2.

The case 2 is rigidly suspended in and coaxial with the case 1, by means of a plurality of spacer rivets 3, whereby the apertures 1" and 2 are in longitudinal alinement with each other, with the members 1 and 2 coaxial with each other. I

It is to be observed that the inner case 2 is not only smaller vertically than is the case 1, but it is also shorter horizontally. By this arrangement I provide practically three communicating chambers: An intake chamher A, a main mixing chamber B, and an auxiliary chamber C, the purposes of which will be hereinafter explained more fully.

Extending outward at right-angles from near the center, radially of the case 1, and formed integral therewith, is a hollow socket 4, in which is threaded one end of the nipple 5 which forms a part of the oil-line for con-. ducting oil, under pressure, from its source of supply into the burner.

A reducing plug 6'is secured in the outlet end portion of the nipple5, with an aperture 1 is the three-way fitting 8, the forward end of which is closed by the plug 9. Secured in the rear end of the fitting 8 is a bushing 10, into which is threaded the disc nozzlell, having a discharge opening 12 formed through the center thereof.

Flaring outward and rearward from the sides of the three-way fitting 8, are the arms 13 and 14, to the rear ends of which is secured the concavo-convex baffle disc 15, the convex side of which is directed forward, that is toward the aperture 12, coaxial therewith, and spaced therefrom, substantially as indicated in Figs. 3, 5 and 6 of the drawings.

Threaded onto the upper end of the nipple 5 the three-way fitting 16, with a plug 17 threaded into its upper end and in alinement with the nipple 5. Numeral 18 denotes a cut-off valve, which is connected with the horizontal aperture of the fitting 16 by means of the nipple 19. Said Valve is adapted to be manually opened and closed by means of the handle 20. Numeral 21 denotes a portion of the oil pipe'which leads from the source of oil supply.

Numeral 22 denotes a comparatively large elbow, into the flange 23' of which the threads 1 are run. Into the other flange, 24, of said elbow, the upper end of the airline pipe .25 is threaded. I 1

Letter A denotes a wall, or the front of a furnace, the same having a fuel feed aperture, a, formed therethrough, which leads into the furnace X. I

Operation In practice my burner is to be located with relation to the furnace it is designed to serve, substantially as is shown in Fig. 2. Desiring now to start the operation one should first turn on the air, through the pipe 25, and then turn on the oil through the pipe '21, by means of the valve 18. The oil will then. pass down through the tube 7 and out through the aperture 12, the-pressure of the oil should be such that it will strike the baffle '15 with such force that it will be fractionated or broken up into a fine mist, but if there were no air pressure from the pipe 25, to pick it up, it would collect or splatter around inside the case 2, that is in the mixing chamber B, but the air under pressure will force the mist of oil forwardly, by which it will be aerified and gassified and carried forward and finally converge through the'aperture 2", where it will be met by the forwardly moving air pressure coming through the chamber C to the same focal point, which is the aperture 1, where it will be further aerified and amalgamated, and whereby it will issue from the aperture or nozzle 1 wholly in an atomized state or in the form of an intimate mixture, which will then be forced through the aperture a and then into the furnace X, where it should at once be lighted, or fired, by means of a lighted match or other small blaze, where it will continue to burnas a pure gas of the proper consistency.

The richness, or leanness, of the mixture may be varied to the proper consistency by simply mcreasing or decreasing the air or the oil pressure, orboth, until the proper combustibility is reached, that is to where there will be no smoke or soot, but only a .pure flame radiating a maximum of heat units and with no waste matter at all.

the event that the aperture 12 should, from any cause, become clogged it may be quickly cleaned by simply closing the valve 18 and then removing the plug 9, then inserting a wire, or the like, through the fitting 8 and pressing it back through they aperture 12, thereby allowing the impediment to be blown out by the air pressure. In like manner the aperture 6, and the tube 7, may be cleaned by removing the plug 17 andforcing a wire through said parts.

It should be emphasized that by this arrangement I provide two mixing chambers,

or rather a double mixing chamber, the two 11' being arranged coaxial with each. other and having the same focal point-,the two chambers having a common discharge at which the product of both are united, with a single delivery into the furnace to be heated by the iii.

combined products of both, and whereby the combined discharge is thoroughly amal gamated into a fuel of uniform consistency throughout.

It is to be observed that the chamber B is I of greater capacity, transversely, than is the chamber C, and also that the chamber B, being in the center of the flow of air therethrough, there will be less frictional contact of the air, with relation to the wall of the chamberA, and the elbow 22. Therefore, for the two reasons, just stated, it is evident that the air passing through the chamber B will be of greater velocity than that passing :through the chamber C, therefore the meeting of the two currents, of different velocity with relation to each other, will cause cross; currents and intermixing currents which, will eventuate in a final super-mixing of the; product immediately prior to, and during,, its passing out through the aperture 1".

Also, it should be observed, the forwardl portion of the case 1 provides means whereby should particles of unatomized oil inadvertently overflow from the chamber B it will drain into the chamber C, therefore by ac-- tual tests it has been proven that it will not; be possible for oil to adhere to the aperture; 1, and therefore no oil can accumulate on; or drip from the periphery of my burner.

It is to be understood that various changes may be made in the shape of the various: parts and in the several details 'of the con-- struction, herein shown and described, with? out departing from the spirit of this lIlVBDition or of sacrificing any of the advantages: thereof which are new and useful and which involves invention.

Having now fully shown and described my invention, and the best means for carrying out the principles thereof in an economical and mechanically efficient manner, what I claim and desire to secure by Letters Pat-' ent of the United States, is

1. A liquid fuel burner comprising two chambers arranged coaxial with relation to each other and having discharge apertures: therein which are coaxial with each other, a single air inlet for both of said chambers, an oil inlet leading into the inner chamberhaving a rearwardly directed outlet, a baffle; plate which the oil strikes as it is discharged rearwardly into the inner chamber and is; thereby atomized and deflected radially to be taken up and mixed with the incoming air and finally forced out forwardly through said discharge openings in the form of a mixture of air and atomized oil and delivered into a furnace where it is consumed.

2. An oil mixer comprising an outer case fully open at its rear end with its forward portion contracted forming a rounded discharge end with an opening formed through the center thereof forming a discharge aperture, the rear end of said case being connected with an air conveying pipe, an inner case of like shape, with relation to the outer case, but of less size both longitudinally and diametrically, means for rigidly suspending the inner case within the outer case, there being a discharge aperture formed through the center of the forward end of the inner case, but which is of less size than the like aperture of the outer case and which is coaxial therewith, a hollow stem extending diametrically through the wall of both the outer and the inner case having a rearwardly directed outlet and having its outer end connected with an oil supply, and a baflie disc suspended coaxially in the rear of the discharge end of said stem and adapted to atomize the oil contacting therewith and causing the oil to radiate outwardly to be taken up by the incoming air and carried forwardly thereby reversing its direction of travel from that of its direction ,as it 'engages' said deflector. j

3.- An oil and air mixercomprising an, outer case, anair supply pipe connected with and closing the rear end-ofsa'idjcase and adapted to supply air under pressu're, the forward end of said case havinga discharge aperture therethrough, an inner case, which is of like shape :with relation to the outer case but of less size both longitudinally andin cross 'section, the

:rear end of the inner'case opening into the the inner end of said stem terminating near the center of th inner case with its outer end connected with an oil supply line adapted to deliver oil under pressure, a fitting secured on the inner end of said stem, a nozzle secured in one end of said fitting and directed rearward,

and a bafile plate suspended in the rear of said nozzle and against which the oil impinges as it issues from said nozzle and together with the incoming air its direction is reversed and at the same time it is mixed with the incoming air and is carried forwardly and discharged through said coaxial discharge apertures.

a. An industrial oil burner, comprising an outer case, an air supply pip-e connected with and closing the rear end of said case and adapted to supply air under pressure there into, the forward end of said case having a contracted discharge aperture formed through the center thereof, an inner case which is of like shape with relation to the outer case but of less dimensions both in cross-section and longitudinally, with the rear end of the inner case fully open into the in terior of the outer case, and with the forward end of the inner case having a contracted aperture therethrough coaxial with the aperture in the outer case, means for rigidly securing the inner case and the outer case in spacedrelation to each other and coaxial with relation to each other, a hollow stem located at right-angles to and extending through the walls of both the outer and the inner case with its inner end terminating near the center of the inner case and with its outer end to be connected with an oil supply under pressure whereby oil may be delivered under pressure therethrough, a rearwardly directed nozzle connected with said inner end of the stem, a baflle plate suspended in the rear of said nozzle and against which the oil will impinge as it sribed my mine; p

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